Instagram Bwin Sport Scam: Won 138,000 TL, Demanded Extra Payments and Issued Threats

I placed a bet through a site called Bwin Sport on Instagram for 1,000 TL, which won 138,000 TL. They contacted me via WhatsApp and said they would transfer the winnings if I paid 7,990 TL. However, they kept demanding more money under the guise of receipts and documentation. When I refused to pay, they threatened to take legal action and claimed to know all my personal information and my relatives' details, saying they would contact them. I do not accept any lawsuit filed against me, and I intend to file a criminal complaint with the prosecutor's office. This is clearly a scam, and I urge others to be cautious.